72
X-HMD01, X-HMD03, X-HX99, X-HX05
52186 (AK4518-VF-E2) (AD/DA PCB : IC801)
• AD/DA Converter IC
6
AINL
Modulator
Decimation
Filter
Decimation
Filter
∆Σ
5
VCML
3
AINR
4
VCMR
2
VRAD
1
VRDA
21
VCOM
19
AOUTL
20
7
AOUTR
PWAD
Modulator
Common Voltage
Serial I/O
Interface
Clock
Divider
8
×
Interpolator
8
×
Interpolator
LPF
∆Σ
Modulator
∆Σ
Modulator
∆Σ
LPF
8
PWDA
18
DEM0
24
VA
22
AGND
23
VB
14
VD
13
DGND
17
DEM1
15
SDTI
16
CMODE
9
MCLK
12
SDTO
11
SCLK
10
LRCK
No.
Pin Name
I/O
Function
1
VRDA
I
Reference voltage input for DAC and VA
2
VRAD
I
Reference voltage input for ADC and VA
3
AINR
I
R ch analog input
4
VCMR
O
R ch common voltage output , 0.45
×
VA
Connect an electrolytic capacitor (about 4.7
µ
F) and a ceramic capacitor (0.1
µ
F) between this pin and AGND.
5
VCML
O
L ch common voltage output , 0.45
×
VA
Connect an electrolytic capacitor (about 4.7
µ
F) and a ceramic capacitor (0.1
µ
F) between this pin and AGND.
ADC power down mode L: power down
DAC power down mode L: power down
Input/output channel clock pin
16
CMODE
I
Master clock selection "H": 384fs or 512fs, "L": 256fs
17
DEM1
I
Deemphasis frequency selection
18
DEM0
19
AOUTL
O
L ch analog output
20
AOUTR
O
R ch analog output
21
VCOM
O
Common voltage output , 0.45
×
VA
Connect an electrolytic capacitor (about 4.7
µ
F) and a ceramic capacitor (0.1
µ
F) between this pin and AGND.
22
AGND
−
Analog ground pin
23
VB
−
Substraight pin
24
VA
−
Analog power supply
•
Block Diagram
•
Pin Function
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